Once again inspired by Dominic Royé’s maps, I decided to map rivers in France. The dataset I use comes from HydroSHEDS. The code below is quite similar to the code in my previous post so I don’t spend a lot of time on it.
This plot shows the density of rivers in France. Now, if we want to show which rivers are the most important, we can modify the opacity of the lines depending on their flow:
